ISO 6149-1 Metric 'O' ring fittings availability

[walkersea]

Hi,

Anyone out there actually using the ISO 6149-1 Metric 'O' ring fittings in stainless steel? I'd like to adopt an 'O' ring seal standard for all our ports to replace NPT, but have concerns about availability of the fittings.

Traditionally, we have used Parker - and their technical info states that this port should be used for all new designs, but when you actually try and order the fittings they are hellishly expensive and on vast leadtimes compared to the SAE J1926-1 port versions.

Is everyone eventually going to adopt this standard so that the likes of Parker are forced into supplying stainless versions as standard, or is it just going to be another available port size to add to the rest? The standard was first released in 1993, so isn't exactly new.

Are there other suppliers out there that are concentrating on this metric standard?

Thanks.

 

[Cockroach]

I'm very surprised that Parker-Hannifin could not help you. That is the first I've heard in twenty-eight (28) years!

You may want to go the Apple Rubber, International Seal, KC Seal (Calgary, AB) or try to make your own. Vulcanizing rubber at the joint under heat and pressure can be done by reputable manufacturers such as AR Thomson.

I suspect that if Parker doesn't have it, then it may just be a custom job. What about a European supplier out of the United Kingdom?

Kenneth J Hueston, PEng
Principal
Sturni-Hueston Engineering Inc
Edmonton, Alberta Canada

 

[hydromech]

Parker Hannifin is very adept at trying to manipulate the market to suit itself.

I say "trying" because they always seem to fail when it comes to getting the product to market.

The sales people decide to push a particular product and then they tell the publications department to distribute the technical details. Unfortunately they dont tell the people who actually make the fittings, hence when the customers try to conform to the new "standard" the fittings are not available.

Here in the UK, Parker have been trying to force us away from BSP ports to metric ports for several years.

If I tell you that I designed well over 40 hydraulic systems for use on US Coast Guard and US Navy ships with exclusively BSP ports, you might get an idea of how sucessful Parker have been.

All the fittings we supplied were Parker EO2 stainless steel with BSP ports and an integral viton 'O' ring.

Even when the Coast Guard engineering logistics team got involved they asked us to change to SAE ports not metric.

In my experiance Parker Hannifin make good products but they can't market them or support them very well.

Hydromech